Teht 173a

A = (3, 3)
B = (8, 3)
f = Segment(A, B)
c = Circle(B, 2)
d = Circle(A, 3)
C = Intersect(d, c)
e = Circle(A, 4)
g = Circle(B, 3)
D, E = Intersect(g, e)
k1, b, a, e_1 = Polygon(A, E, B)
α = Angle(A, E, B)
h = OrthogonalLine(C, f)
β = Angle(f, h)